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Oil talerance

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glen

09-20-2002 16:12:37




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for Tea 20 what is the max oil talerance on the mains




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Jim W.

09-21-2002 07:00:20




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 Re: oil talerance in reply to glen, 09-20-2002 16:12:37  
Do you mean the space between the crankshaft and the bearings? I have those kind of specs here; let me know exactly what you need.
Jim W



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glen

09-21-2002 16:15:21




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 Re: Re: oil talerance in reply to Jim W., 09-21-2002 07:00:20  
hear is my problem when instaling a set of undersized main bearings I ruined one I have a good set of standard size my cranck is turned .010 on the plactigauge with the under size bearings I get .0015 whitch is good if I put standard bearings I should get .0025 tolarance would this be a good idea . Another thing is there end play tolarance on the conecting rods I am sure glad for any advice



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glen

09-23-2002 13:43:58




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 Re: Re: Re: oil talerance in reply to glen, 09-21-2002 16:15:21  
thanks Jim I will check out those specs and I will buy another set of under size bearings and use just one if any body needs a broken set of 0.10 I will sell it , I dont know what happened to the frist set I guess I got careless when torqueing it down



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Jim W

09-21-2002 21:56:41




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 Re: Re: Re: oil talerance in reply to glen, 09-21-2002 16:15:21  
Tolerance is spec'd at 0.001-0.0025", so your 0.0015" looks excellent.
You slipped a decimal point on your math there. If you put standard size bearings you will get 0.0015"+ 0.010"= 0.0115" which is huge. If you got your crank turned down 0.010" then you have to go with the undersize bearings for sure. Did the machine shop have the right specs for this tractor? I hope they do because I took my crank in this morning!
Do you have calipers to measure the crankpin diameter?
You said you ruined a bearing - were the others OK? I am wondering if somehow it didn't snap into the journals or something. Yes there is end play tolerance on the connecting rods; it is 0.0075-0.0115"
Don't forget to check your thrust washers too. Crankshaft end float should be 0.0048-0.0117"
Jim W

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